高放废物地质处置库中非饱和缓冲层的热-水-力耦合数值模拟

蔡国庆; 赵成刚; 田辉

高放废物地质处置库中非饱和缓冲层的热-水-力耦合数值模拟 English Version

1. 北京交通大学土木建筑工程学院岩土工程系，北京 100044；2. 澳大利亚纽卡斯尔大学岩土科学与工程研究中心，纽卡斯尔 2308；3. 中交第四航务工程勘察设计院，广东广州 510230

基金项目: 国家自然科学基金项目（51208031，51278047）；北京市自然科学基金项目（8112024）

详细信息

作者简介:
蔡国庆(1983- )，男，江苏镇江人，博士后，主要从事非饱和土本构关系、多场耦合等方面的研究工作。E-mail: guoqing.cai@newcastle.edu.au。

中图分类号: TL942；TU43
计量
- 文章访问数: 628
- HTML全文浏览量: 5
- PDF下载量: 1036
出版历程
- 收稿日期: 2013-03-02
- 发布日期: 2013-07-18

Numerical simulation of coupled thermo-hydro-mechanical behavior for engineered barriers in high-level radioactive waste disposal

1. Department of Geotechnical and Geoenvironmental Engineering, School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 2. ARC Centre of Excellence for Geotechnical Science and Engineering, The University of Newcastle, NSW 2308, Australia; 3. CCCC-FHDI Engineering Co., Ltd., Guangzhou 510230, China

摘要

摘要: 作为高放废物地质处置库中的缓冲/回填材料，膨润土在核废料放出的热量和周围天然岩体中地下水共同作用下，其热-水-力耦合作用效果对处置库的稳定性、安全性有着极为重要的影响。以非饱和土多场耦合理论为基础，基于ABAQUS有限元分析平台，建立二维轴对称模型，对高放废物地质处置库中膨润土缓冲层的热-水-力耦合过程开展了有限元模拟，给出了处置库近场缓冲层中不同位置的温度、饱和度、竖向应力及位移、孔隙水压力及吸力的分布及变化规律，并重点分析了温度场的影响，通过与已有研究成果的对比，证实了所计算结果的合理性。
- 高放废物地质处置 /
- 膨润土 /
- 热-水-力耦合 /
- 数值模拟
Abstract: Following the need for understanding and quantifying the stability and security of the nuclear waste disposal repository, the coupled thermo-hydro-mechanical behavior of engineered barriers is studied. Bentonites are often envisaged as the main component of engineered barriers. These barriers are always subjected to thermal loading due to the heat emitted by the waste and to hydration from the water coming from the adjacent rock. Based on 2D axisymmetric analysis, finite element modelling of an in-situ large scale experiment is carried out by using ABAQUS. The simulated large scale experiment, called CLAB, is designed in the underground research facility in Sweden. The spatial distribution and variation law of temperature, saturation, pore pressure, suction, vertical stress and displacement in the engineered barrier are investigated. Special attention is given to the temperature effect on saturation, pore pressure, suction, vertical stress and displacement. The results of the finite element modelling of the CLAB experiment are compared with the in-situ measurements and some other computation data using different methods. The proposed modelling and simulating procedures are validated from the good agreement between predictions and in-situ measurements.
- high-level radioactive waste disposal /
- bentonite /
- thermo-hydro-mechanical coupling /
- numerical simulation

HTML全文

参考文献(1)

OLIVELLA S,CARRERA J,GENS A,et al. Nonisothermal multiphase flow of brine and gas through saline media[J]. Transport in Porous Media, 1994, 15(3): 271-293.
OLIVELLA S,GENS A,CARRERA J,et al. Numerical formulation for a simulator (CODE_BRIGHT) for the coupled analysis of saline media[J]. Engineering Computations, 1996, 13(7): 87-112.
GENS A,OLIVELLA S. Coupled Thermo-hydro-mechanical analysis of engineered barriers for high-level radioactive waste[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(4): 670-680.
COLLIN F,LI X L,RADU J P,et al. Thermo-hydro- mechanical coupling in clay barriers[J]. Engineering Geology, 2002, 64(2/3): 179-193.
FRAN?OIS B,LALOUI L,LAURENT C. Thermal-hydro- mechanical simulation of ATLAS in situ large scale test in Boom Clay[J].FRAN?OIS B, LALOUI L, LAURENT C. Thermal-hydro- mechanical simulation of ATLAS in situ large scale test in Boom Clay[J]. Computers and Geotechnics, 2009, 36(4): 626-640.
THOMAS H R,CLEALL P J,DIXON D,et al. The coupled thermal-hydraulic-mechanical behavior of a large-scale in situ heating experiment[J]. Géotechnique, 2009, 59(4): 401-413.
?KESSON M,JACINTO A C,GATABIN C,et al. Bentonite THM behaviour at high temperatures: experimental and numerical analysis[J].?KESSON M, JACINTO A C, GATABIN C, et al. Bentonite THM behaviour at high temperatures: experimental and numerical analysis[J]. Géotechnique, 2009, 59(4): 307-318.
CHO W J,LEE J O,KWON S. Simulation of heat and water counterflow in unsaturated compacted bentonite[J]. Environmental Engineering Science, 2009, 26(3): 589-599.
沈珍瑶,李国鼎,李书绅. 高放废物处置库近场热湿力耦合初步模拟[C]// 王驹, 范显华, 徐国庆, 等主编. 中国高放废物地质处置十年进展. 北京: 原子能出版社, 2004: 370-377. (SHEN Zhen-yao,LI Guo-ding,LI Shu-shen. The coupled calculation in near field of a Hlw deep geological disposal repository[C]// WANG Ju, FAN Xian-hua, XU Guo-qing, eds. Geological Disposal of High Level Radioactive Waste in China: Progress in Last Decade. Beijing: Atomic Energy Press, 2004: 370-377(in Chinese))
蒋中明,HOXHA D,HOMAND F. 核废料地质贮存介质黏土岩的三维各向异性热-水-力耦合数值模拟[J]. (岩石力学与工程学报), 2007, 26(3): 493-500.(JIANG Zhong-ming,HOXHA D,HOMAND F. Numerical simulation of 3D coupled thermo-hydro-mechanical anisotropy of argillite rock for radioactive waste disposal[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(3): 493-500. (in Chinese))
卢应发,吴延春,罗先启,等. 高放废物处置中的THM 耦合理论及分析[J]. (岩石力学与工程学报),2007, 26(增2): 3940-3945.(LU Ying-fa,WU Yan-chun,LUO Xian-qi,et al. THM coupling theory and analyses of high-level radioactive waste disposal[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(S2): 3940-3945. (in Chinese))
张玉军. 核废料处置概念库近场热-水-应力耦合二维有限元模拟[J]. (岩土工程学报), 2006, 28(9): 1053-1058.(ZHANG Yu-jun. 2D FEM simulation for coupled thermo-hydro-mechanical processes of near field in conceptual nuclear waste repository[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(9): 1053-1058. (in Chinese))
张玉军. 核废料处置概念库近场热-水-应力耦合模型及数值分析[J]. 岩土力学, 2007, 28(1): 17-22, 44. (ZHANG Yu-jun. Coupled thermo-hydro-mechanical model and relevant numerical analysis for near field of conceptual nuclear waste repository[J]. Rock and Soil Mechanics, 2007, 28(1): 17-22, 44. (in Chinese))
张玉军. 核废料处置概念库工程屏障中热-水-应力耦合过程数值分析[J]. (工程力学), 2007, 24(5): 186-192.(ZHANG Yu-jun. Numerical analysis for coupled thermo-hydro-mechanical processes in engineered barrier of conceptual nuclear waste repository[J]. Engineering Mechanics, 2007, 24(5): 186-192. (in Chinese))
崔玉军,陈宝. 高放核废物地质处置中工程屏障研究新进展[J]. (岩石力学与工程学报), 2006, 25(4): 842-847.(CUI Yu-jun,CHEN Bao. Recent advances in research on engineering barrier for geological disposal of high-level radioactive nuclear waste[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(4): 842-847. (in Chinese))
SKB, Final Storage of Spent Nuclear Fuel-SKB-3[R]. Sweden: Swedish Nuclear Fuel and Waste Management Company Fuel-SKB-3[R]. Sweden: Swedish Nuclear Fuel and Waste Management Company, 1983.
ROMERO E,VAUNAT J. Retention curve of deformable clays[C]// TARANTINO M. Experimental Evidence and Theoretical Approaches in Unsaturated Soils. Rotterdam: Balkema, 2000: 91-106.
ARIFIN Y F,AGUS S S,SCHANZ T. Temperature effects on suction characteristic curve of bentonite-sand mixtures[C]// MILLER GA ZC, HOUSTON S L, FREDLUND D G. Proceedings of 4th International Conference on Unsaturated Soils. Carefree, Arizona, USA, 2006: 1314-1325.
蔡国庆,赵成刚,刘艳. 非饱和土土-水特征曲线的温度效应[J]. (岩土力学), 2010, 31(4): 1055-1060.(CAI Guo-qing,ZHAO Cheng-gang,LIU Yan. Temperature effects on soil-water characteristic curve of unsaturated soils[J]. Rock and Soil Mechanics, 2010, 31(4): 1055-1060. (in Chinese))
CAI Guo-qing,ZHAO Cheng-gang,LIU Yan,et al. Volume change behaviour of unsaturated soils under non-isothermal conditions[J]. Chinese Science Bulletin, 2011, 56(23): 249-250.

施引文献

资源附件(0)

计量

文章访问数: 628
HTML全文浏览量: 5
PDF下载量: 1036
被引次数: 0

高放废物地质处置库中非饱和缓冲层的热-水-力耦合数值模拟 English Version

作者简介: 蔡国庆(1983- )，男，江苏镇江人，博士后，主要从事非饱和土本构关系、多场耦合等方面的研究工作。E-mail: guoqing.cai@newcastle.edu.au。

计量

出版历程

Numerical simulation of coupled thermo-hydro-mechanical behavior for engineered barriers in high-level radioactive waste disposal

计量

出版历程

目录

作者简介:
蔡国庆(1983- )，男，江苏镇江人，博士后，主要从事非饱和土本构关系、多场耦合等方面的研究工作。E-mail: guoqing.cai@newcastle.edu.au。